基于非稳定流抽/压水试验的岩体渗透系数求解方法  

Solving Permeability Coefficient of Rockmass Based on Packer/Pumping Test with Unsteady Phreatic Flow

作　　者：陈志强 高成城 任水源 欧宇 

机构地区：[1]贵州省水利水电建设管理总站,贵州贵阳550002 [2]贵阳市水利水电勘测设计研究院,贵州贵阳550002 [3]贵州乾龙建设项目管理有限责任公司,贵州贵阳550002

出　　处：《水电能源科学》2016年第7期143-145,207,共4页Water Resources and Power

基　　金：贵州省科技厅;水利厅2007年综合重大科研专项经费项目(黔科合重大专项字(2007)6012号)

摘　　要：针对传统抽水试验和Lugeon压水试验的不足,在同一钻孔内分别进行了分段压水试验和完整井抽水试验,并根据两种试验得到了试验钻孔处渗透系数剖面分布,分析了采用非稳流压力法测量岩体渗透系数的可行性和准确性。结果表明,压水试验与抽水试验的渗透系数并无显著差异,尤其非稳定流压水试验所需的试验时间更短,其所要求的试验条件易于获得,且准确性和可操作性更优。Aiming at the shortcomings of traditional pumping test and Lugeon packer test,staged packer permeability test using unsteady phreatic flow as well as pumping test were carried out at the same drill hole.And the profiles of permeability coefficient were obtained by both tests.The feasibility and accuracy of rockmass permeability coefficient measured by unsteady flow pressure method was analyzed.The results obtained by the two tests were not significantly different with each other.The packer permeability test was more feasible since it consumed less test time and the requirements for its operation were easier to be satisfied.

关 键 词：压水试验 抽水试验 非稳定流 渗透系数 

分 类 号：TU458[建筑科学—岩土工程]